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Ultralow-Amplitude Cepheids in the Large Magellanic Cloud

Buchler, Benjamin; Wood, Peter R; Keller, Stefan; Soszynski, Igor


The MACHO variables of LMC field 77 that lie in the vicinity of the Cepheid instability strip are reexamined. Among the 144 variables that we identify as Cepheids, we find 14 that have Fourier amplitudes <0.05 mag in the MACHO red band, of which seven have an amplitude <0.006 mag: we dub the latter group of stars ultralow-amplitude (ULA) Cepheids. The variability of these objects is verified by a comparison of the MACHO red with the MACHO blue light curves and with those of the corresponding...[Show more]

CollectionsANU Research Publications
Date published: 2005
Type: Journal article
Source: Astrophysical Journal, The
DOI: 10.1086/497423


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